摘要
引风机检修中发现液压油箱和液压缸中有黑色异物硫酸钙,其来源为外部CaSO4颗粒经引风机液压系统密封处侵入,而外部大量CaSO4颗粒的形成与超低排放改造中SCR技术和低低温除尘技术有关。加强对引风机液压系统的维护和液压油监测是避免异物带来液压故障的技术手段。
Black foreign objects were found in the hydraulic tank and cylinder during the induced draft fan overhaul.The analysis found that the black foreign matter components in the oil tank and the hydraulic cylinder were basically calcium sulfate.The source is the intrusion of external CaSO4 particles through the seal of the induced draft fan hydraulic system,and the formation of a large number of external CaSO4 particles is related to SCR technology and low and low temperature dust removal technology in ultra-low emission transformation.Strengthening the maintenance of the hydraulic system of the induced draft fan and the monitoring of hydraulic oil is a technical means to avoid hydraulic failure caused by foreign objects.
关键词
引风机
液压缸
硫酸钙
超低排放
induced draft fan
hydraulic cylinder
calcium sulfate
ultra-low emission
